As a slight variation on the topic, I am in my mid-thirties (but look early 20s, which has pros and cons! LOL) and work at a quilting shop. I have lost count of the number of customers - the vast majority of which are decades older than me - who assume that I know nothing about quilting and demand, rudely, to speak to someone who "knows what they are talking about". Umm, I've been quilting for over 15 years. My colleague may have white hair but she does not have even half the experience (and therefore I would like to think, the knowledge) that I have.
So that is definitely an age thing.
I have tried quilting groups and the like, but come to the conclusion that I am better doing my own thing. Quite simply I have very little in common with the majority of the women in these groups - there's quilting of course, but the "off-topic" conversation is hard going. No-one's fault, just different stages in life.